[BC] Re: Split level combine and the loss of the analog-only transmitter

[Mike McCarthy]

Answer #1, there is no solid answer at this point.  But it is my 
understanding the FCC will look to the license for the operating values of 
the station as a whole.  If the analog goes down but the digital or hybrid 
doesn't, It's my understanding the FCC will not bat an eye as long as the 
main analog operation is restored in a reasonable time 
frame.  Vague...yes.  But there's nothing more at the point to go on 
officially until the rules are released.

Answer #2  HD will stay on to it's normal distance, but blend to a noisier 
signal when operating analog -10dB +/- ERPr.

MM

At 02:19 AM 4/9/2007 -0400, Xmitters at aol.com wrote

>I'm wondering about the FCC and theoretically allowed operating conditions
>during emergency operation of a Harris split-level combined transmitter 
>system.
>
>Say your analog-only was about 13 kW and the analog power from the analog 
>+ HD
>transmitter was another  4 kW or so, and the HD power was about 170 watts.
>Yes, I know these numbers are not exact but let's use them for the sake of 
>this
>
>question.
>
>If I lose my analog-only transmitter and the Analog + HD transmitter
>survives, Is the FCC going to let me run the allowed HD power as dictated 
>by my
>
>full-power RF mask, or are they going to want me to reduce the HD power to 
>the
>appropriate level consistent with the amount of analog power I'm putting 
>out at
>  the
>time?
>
>Second question: What would happen at the analog and digital receiver
>locations with regard to reception, when I lose the 13 kW analog-only 
>transmitt
>er and
>the  analog + HD (4 kW analog 170 Watts HD) transmitter remains on the air?
>(we will ignore the losses in the HD/Analog RF combiner for the sake of
>simplicity)
>
>
>Thanks,
>
>
>Jeff Glass
>Northern Illinois University
>
>Dell CPi-D266 Win98SE AOL 5.0
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